The year’s most surprising 100 percent “fresh” on rotten tomatoes, and arguably the least deserving. It does a solid job of telling you exactly why Nas is important in hip hop, why his breakthrough album is a contemporary classic and why it’s a coming-of-age anthem for black youth, but for a movie that’s so short (barely 75 minutes) it feels more than a little aimless. I found my mind drifting a couple times, and that’s not good for a documentary that is shorter than your typical episode of an FX drama series. Grade: C+